Expansible roll.



No- 763,251. PATENTED JUNE 21, 1904.

' J. H. BRECK.

BXPANSIBLE ROLL. APPLICATION FILED MAR. 7. 1904.

ill,

' I Ia- Ill/l/E/l/TO/i Break miiiml Ill" ATTORNEYS 1 bllnl Ln- WW 4 zw flw w m 8 an E may m. z m

UNiTEn STATES PATENT Y Patented June 21, 1904.

,EXPANSIIBLE R.Ql.'L--

SPECIFICATION forming part of Letters Patent no. 763,251, dated June 21,1904.

Application filed March 7,1904.

To all whom it may concern:

Be it known that I, JOSEPH H. BRECK, a

citizen of'the United States, and a resident of Bristol, in the countylof Grafton and State of New Hampshire, have invented a new and Improved 'Expansible Roll, of whichth e following is a full, clear, and enact description.

My-invention relates to rolls the peripheries of which may vary in size, and more,

particularly to those adapted for use in papermachines. In such apparatus it is of considerable importance that the seam of the felts be kept straight;- otherwise the blowing of air through the pulp is liable to occur and the felts tend to narrow up, drawing the warp and decreasing their life. The seams are ordinarily killed by the securing of pieces of- I drawings, forming a part of this specification,

'tion. therethrough' with the. periphery; in its nore in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1' is a perspective view of a portion of a roll embodying one form of my inven- Fig. 2 is a central longitudinal section mal or unex panded position. Fig. 3 is a simi lar view of the sections expanded. Figs. 4 and 5 are transverse sections on the'lines i 4 and 5 f Figs. Q and 3, respectively; and Fig. 6 is a perspective view of one of the expanding members. r

10 designates a shaft, which is here shown as hollow and provided at its ends with journal portions 11 ll. Near the center of the shaft is an enlargement 12, which maybe secured to or integral with it, and upon this enlargement are fastened, hy-screwslfl? or the like, peripheral sections 13, which are formed of some flexible material-4oz exam- Serial No. 196,928. lNo model ple, wood. These sections are subs'tantiallyf5 in contact at their edges and the outer side of each is curved, so that the periphery as a whole is of cylindrical form. Upon their in ner sides they are inclinedfrom the center outward, being here-shown as having .plane and left handed threads, respectively, which engage corresponding threads upon a rod 18, extending through the shaft and having a 7 bearing in the, journal portions 11 11. The rod may be retained against longitudinal movement by a screw 19, threadedthrough one of the journals and having its inner end located within a groove inthe rod. At one end of Y the rod is secured an operating member or hand-wheel 20 for convenience inv rotating'it, and threaded upon the ro'dadjacent to this hand-wheel is a nut or hand-wheel 21, which may be forced against the end of the journal portion for locking therod in its adjustedv position.

' 'In use the roll may be applied to the ma chine in. which it is to be used with the parts in the position .illustrated in Fig.2, orsome- 5 what expanded. Then if it is found that the seam of the felts does not run straight it is onlynecessary for theoperator to release the locking-wheel and rotate the rod by its'hand wheel. This moves the expanding members 9 alongthe shaft, forcing them into contact with the peripheral sections, which are bent out-f -'wardly, Varying the diameter of the roll, and consequently the rate of travel of different parts of the felts thereon. This adjustment may be changed by moving the ends of the sections. toward or from the shaft until the desired travel is obtained and the seam runs These are here illustrated as of may be again locked and It will be evident that this true, when the'rod against rotation.

an expanding member engaging the rod coacting with the sections.

D may be very readily accomplished without the L. The combination with a hollow slotted stopping of the machine or decreasing its proshaft, of peripheral sections mounted upon duction and that there is no danger of in any said shaft, a threaded rod extending within Way injuring the felts. the shaft, and an expanding member movable Havingthusdescribed myinvention, Iclaim along the shaft and having a nut connected 3 as new and desire to secure by Letters Patent 1. The combination with a shaft, of flexible peripheral sections fixedly secured near their centers to said shaft, and an expanding memher which may be forced against the inner sides of the sections near each end.

2; The combination with a shaft, of flexible peripheral sections fixedly secured near their centers to said shaft and having inclined inner I faces, an operating member having inclined through the shaft-slot and engaging the rod.

5. The combination with a hollow shaft having an enlargement between its ends, of flexible sections secured to the enlargement and provided with inclined inner faces, a threaded 35 operating-rod within the shaft, an expanding member movable upon the rod and having a thread engaging that of the rod, and means for rotating the rod;

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH H. BRECK.

40 faces coacting with those of the sections near each end, and means for moving the operating member along the shaft.

3. The combination with a hollow shaft, of peripheral sections mounted on said shaft, a threaded rod extending through the shaft, and

Witnesses:

FRANK N. GILMAN, FRANK P. FiELns. 

